Re: [Qemu-devel] Re: Strategic decision: COW format

[Avi Kivity]

On 02/23/2011 05:52 PM, Anthony Liguori wrote:
> > I still don't see.  What would you do with thousands of checkpoints?
>
>
> Er, hit send to quickly.
>
> HPC is a big space where checkpointing is actually useful.  An HPC 
> workload may take weeks to run to completion.  If something fails 
> during the run, it's a huge waste of time.  However, if you do 
> regularl checkpointing, a failure may only lose a few minutes of work 
> instead of the entire weeks worth of work.

The trick is to delete snapshot N-M after taking snapshot N (for a small 
constant M).

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error compiling committee.c: too many arguments to function